Shaft coupling



J. F. D. HOGE Jan, 20, 1 925.

SHAFT COUPLING Filed May 11, 1922 lit Patented Jan. 20, 1925.

UNITED STATES PATENT G FFILQE.

JOSEPH F. D. EDGE, OF NEW YORK, N. Y.. ASSIGNOR TO WESTERN ELECTRIC COM-PANY, INCORPORATED, OF NEW YORK. N. Y. A CORPORATION OF NEW YORK.

SHAFT COUPLING.

Application filed May 11, 1922.

To (all whom it may concern:

Be it known that I, Josnrrr F. D. Hoon, a citizen of the United States,residing at New York, in the county of New York, State of New York, haveinvented certain new and useful Improvements in Shaft Couplings, ofwhich the following is a full, clear, concise, and exact description.

This invention relates to an air-circulating shaft coupling.

An object of this invention is to provide a simple, efficient,inexpensive, and unitary air-circulating shaft coupling.

Fig. 1 in the drawing illustrates one embodiment of the invention asapplied to a motor which drives a circuit interrupter.

Fig. 2 is a side view of the structure shown in Fig. 1.

Fig. 3 is a View on line of Fig. 1.

In Fig. 1 there is shown a motor 6 mount ed on a base 3 on which thereis also mounted a circuit interrupter 4 which is driven from the motor6. The circuit interrupter t comprises a plurality of concentricallyarranged rii'igs, some of which are continuous, while others aresegmented and over which brushes carried by a brush arm are designed topass. The shaft upon which the distributor arm is mounted, is drivenfrom a shaft 9 through the instrumentalities of gearing mechanism (notshown). The shaft 9 is connected with a shaft 7 of the motor 6 through aflexible coupling 8. The flexible coupling 8 consists of a pair of T-shaped members 8 and 8, each of which is rigidly secured to itscorresponding shaft by means of set screws 13 or other locking devices.Each of the T-shaped members 8 and 8 has secured in opposite endsthereof pins 12, which extend. through apertures cut in a flexiblemember 8*, such as rubber, leather, or the like. This member 8 isdisposed between the surfaces of the T-shaped members 8 and 8 to providea connection between driving and driven shafts that will equalize smalldifferences in angular acceleration that may occur between them and atthe same time prevent binding or heating of the shaft bearings due tolack of proper alingment. The T-shaped member Serial No. 560,100.

8" is disposed with respect to the T-shaped member 8 by an angle of 90.

In cases where excessive heating takes place due to the motor beingenclosed, thus not pern'iitting the proper ventilation, a motor-coolingfan or air-circulating device 11 is arranged integral with the couplingmembers 8 and 8. As shown in Fig. 2, 1 he fan 11 is interposed between asurface of the coupling 8 and a surface of the flexible member 8*. lVithsuch an arrangement, during the operation of the motor, currents of airwill be forced upon the housing of the motor 6, thus serving tomaterially reduce the existing temperature of the motor caused by itsoperation.

The fan structure is preferably a metal disc with a surrounding rim andwith blades cut so as to project on opposite sides towards oppositeedges of the rim. It is, of course, obvious that other types of fan orair-circulating devices may be substituted for the specific structuredisclosed without requiring the exercise of invention.

In the arrangement shown in Fig. l, the

motor 6 and the circuit interrupter 4 are provided with a motor speedregulator 10, the operation of which is well known to those skilled inthe art. The structure is enclosed in a casing 5. For permitting thecirculation of air currents through the casing 5, holes let are cut ineach end of the casing. Currents of air are thus drawn from the openingsin the casing 5 closest the circuit interrupter and caused to circu lateover the casing of the motor 6 thus caus ing a marked degree of coolingof the motor.

The air-circulating device, which is arranged integral with the flexiblecoupling for connecting two shafts together, has been shown as appliedto a motor driving a circuit interrupter. It is. of course, obvious thatother departures from the specific arrangement shown, can be madewithout departing from the spirit and scope of the present invention.

The invention claimed is:

1. A device of the character described comprising in combination adriving member, a driven member, each comprising a yoke having arms, aflexible disc, a fan having a disc-like center portion, and meansprqectmg from the arms oi said yokes tor engaging said disc and saidfan.

2. A device of the character described comprising in combination adriving mem ber, a driven member, each comprising a yoke, pinsprojecting from the ends of said yokes, a flexible disc, a fan having adisclike center, said disc and said fan having registered openingsprovided therein adapted to engage said pins.

In Witness whereof, I hereunto subscribe my name this 8th day of May A.1)., 1922.

JOSEPH F. D. HOGE.

